66715565 ÷ 925 
The aim is to understand the frequency of 925 in 66715565.

Step 1:
When dividing 6 by 925, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 925

Step 2:
925 goes into 66 0 times with a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Append the next digit (7) from the dividend to 66 and continue with: 667 / 925

Going ahead to step 3:
667 divided by 925 is 0 with a remainder of 667.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 667 after subtracting 0 from 667.
Bring next digit (1) of the dividend behind the 667 and repeat the process: 6671 / 925

On to step 4:
The number 925 fits into 6671 7 times, leaving a remainder of 196.
Write down 7 as next digit of the result. 
Result so far: 7.0
If we take 6475 away from 6671, we end up with 196.
Include the next digit (5) from the dividend after 196, then repeat: 1965 / 925

Step 5:
If we divide 1965 by 925, we get 2 and a remainder of 115.
Write down 2 as next digit of the result. 
Result so far: 72.0
Deduct 1850 from 1965 and we're left with 115.
Bring next digit (5) of the dividend behind the 115 and repeat the process: 1155 / 925

On to step 6:
If we divide 1155 by 925, we get 1 and a remainder of 230.
Record the quotient 1 as the next digit in the result. 
Result so far: 721.0
Deduct 925 from 1155 and we're left with 230.
Append the next digit (6) from the dividend to 230 and continue with: 2306 / 925

Moving on to step 7:
When dividing 2306 by 925, we get 2 with a remainder of 456.
The next digit of our result is 2. 
Result so far: 7212.0
Deduct 1850 from 2306 and we're left with 456.
Append the next digit (5) from the dividend to 456 and continue with: 4565 / 925

Advancing to step 8:
If we divide 4565 by 925, we get 4 and a remainder of 865.
Write down 4 as next digit of the result. 
Result so far: 72124.0
If we subtract 3700 from 4565, we get 865.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8650, and continue the process.

Let's proceed to step 9:
925 goes into 8650 9 times with a remainder of 325.
Put 9 as the next digit of the answer. 
Result so far: 72124.9
If we take 8325 away from 8650, we end up with 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Advancing to step 10:
925 goes into 3250 3 times with a remainder of 475.
Write down 3 as next digit of the result. 
Result so far: 72124.93
Subtracting 2775 from 3250 leaves us with 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

On to step 11:
925 can be fit into 4750 5 times, resulting in a remainder of 125.
Write down 5 as next digit of the result. 
Result so far: 72124.935
Subtract 4625 from 4750 to get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Moving on to step 12:
The number 925 fits into 1250 1 times, leaving a remainder of 325.
Record the quotient 1 as the next digit in the result. 
Result so far: 72124.9351
Subtract 925 from 1250 to get 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Let's proceed to step 13:
The number 925 fits into 3250 3 times, leaving a remainder of 475.
Record the quotient 3 as the next digit in the result. 
Result so far: 72124.93513
If we subtract 2775 from 3250, we get 475.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

Step 14:
If we divide 4750 by 925, we get 5 and a remainder of 125.
Put 5 as the next digit of the answer. 
Result so far: 72124.935135
If we subtract 4625 from 4750, we get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Advancing to step 15:
If we divide 1250 by 925, we get 1 and a remainder of 325.
The next digit of our result is 1. 
Result so far: 72124.9351351
Subtracting 925 from 1250 leaves us with 325.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3250, and continue the process.

Moving on to step 16:
925 goes into 3250 3 times with a remainder of 475.
Put 3 as the next digit of the answer. 
Result so far: 72124.93513513
The remainder is 475 after subtracting 2775 from 3250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4750, and continue the process.

The quotient of the division is 72124.93513513, and the remainder is 4.75e-07.